Rockford Fosgate P2D4-15 Punch Series 15" 800W Peak Power Handling at 4 Ohms, Dual Voice Coil Stage 2 Component Car Subwoofer
We are a Rockford Fosgate authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
What's Inside?
- • One 15" Dual 4-ohm voice coil subwoofer
- • Trim ring
- • Eight 1-1/8" Allen head screws
- • 4mm Allen head bit
- • Owner's Manual
Why Choose Rockford Fosgate P2D4-15 Component Car Subwoofer?
Deep, Earth-Shaking 15-Inch Bass
This massive 15-inch beast delivers a solid 400 Watts RMS (800W Peak) of CEA-2031-compliant power, dropping down to a subterranean 21 Hz. Built with a bulletproof Kevlar-reinforced paper cone and a durable Santoprene surround, it pushes massive amounts of air to deliver deep, earth-shaking bass that cuts right through road noise.
Cool Under Pressure with FlexFit
Push your system to the limit without breaking a sweat. The P2D4-15 features a rigid StampCast steel basket with an anodized aluminum voice coil former and spider venting to dissipate heat fast during heavy listening sessions. Plus, Rockford’s brilliant FlexFit frame uses slotted mounting holes instead of rigid single-screw openings, allowing for slight placement adjustments so you can get a perfect, frustration-free install every single time.
Versatile Wiring and Enclosure Setup
Take total control over your custom build. Armed with dual 4-Ohm voice coils, this sub lets you easily wire for a 2-Ohm load to maximize your amplifier's output, or an 8-Ohm load for multi-sub configurations. Whether you drop it into an optimal 1.58 cubic foot sealed box for tight, accurate sound quality, or a 2.66 cubic foot ported enclosure tuned to 32 Hz for maximum efficiency and volume, this Punch series heavy-hitter delivers.
Frequently Asked Questions (FAQ)
- • Why isn't the subwoofer producing as much bass as expected?
Check the enclosure volume, amplifier gain, crossover settings, and speaker polarity. An improperly sized enclosure or reversed polarity can significantly reduce bass output and make the system sound weaker than expected.
- • What enclosure size should I use for the best performance?
Use a properly designed sealed or ported enclosure that follows the manufacturer's recommended specifications. Correct internal volume and construction help the woofer produce deeper, stronger, and more controlled bass.
- • How should I wire the dual voice coils?
The dual voice coils can be wired in different configurations to achieve various final impedances. Select a configuration compatible with your amplifier's minimum impedance before connecting the system.
- • Why does the amplifier go into protect mode during heavy bass?
Check the final impedance, speaker wiring, power connections, and amplifier temperature. An incorrect load, short circuit, voltage drop, or overheating can trigger protection when bass demand increases.
- • Why does the bass sound distorted at higher volume?
Distortion can occur when the amplifier clips, the gain is set too high, or the woofer is pushed beyond its limits. Lower the gain and verify the crossover and amplifier settings are properly adjusted.
- • Why am I hearing rattling or buzzing from the enclosure?
Inspect the enclosure joints, mounting screws, speaker terminals, and nearby vehicle panels. Loose hardware or air leaks can vibrate during heavy bass and create noises that may resemble speaker damage.
- • Does the subwoofer need a break-in period?
A gradual break-in period allows the suspension and moving components to loosen naturally. Start at moderate volume levels and avoid prolonged maximum output during the first several hours of use.
- • Can I use it with a factory head unit?
Yes, but an appropriate external amplifier is generally required to provide sufficient power. Depending on the vehicle, a line output converter or factory integration interface may also be necessary.
- • Why does the bass become weaker when I increase the volume?
Check for amplifier clipping, voltage drop, protection mode, or an incorrect impedance load. These issues can cause the amplifier to reduce output or shut down when bass demand increases.
- • What amplifier should I pair with this subwoofer?
Choose an amplifier that provides clean RMS power appropriate for the subwoofer's power handling at the final wired impedance. Proper matching helps maximize bass while minimizing clipping and potential damage.
- Diameter : 15 Inch
- Sensitivity : 86 dB
- Impedance : 4 Ohm
- Frequency Response : 20-250 Hz
- Peak Power Handling : 800 Watts
- Top Mount Depth : 7-7/16 Inches
- Number of Voice Coils : Dual
- Suggested Sealed Box Volume : 1.58 Cubic ft.
- Suggested Ported Box Volume : 2.66 Cubic ft.
- RMS Power Handling : 400 Watts
Features:
- Overview: The Rockford Fosgate Punch P2D4-15 is a 15-inch subwoofer with dual 4Ω voice coils. The sub features a StampCast steel frame, quick-release compression terminals, a Kevlar fiber reinforced paper cone, and Santoprene surround. An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.
- Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.
- Steel Basket: The P2D4-15 subwoofer features a StampCast steel basket for added rigidity.
- Compression Terminals: The P2D4-15 features spring post terminals which accommodate speaker wire up to 10 gauge.
- CEA-2031 Compliant: Power handling on the P2D4-15 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle power under continuous demand, not instantaneous power handling, that over time, can damage voice coils.
- FlexFit Basket: The Flex Fit frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.
- Trim Ring: To improve the cosmetic look, a decorative trim ring is included that mounts over the flange of the woofer. When using the cast aluminum trim ring the woofer is first mounted with four screws, then the ring is placed on top of the woofer, aligning the final four holes of the woofer with ring. The other four screws are used for these holes to mount the ring and woofer to the enclosure. Without the trim ring the mounting height of the woofer is just under 15/16 of an inch, with the trim ring it's approximately 1-1/16 inches. The diameter of the trim ring is 16-3/8 inches.
- Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 1.58 cubic feet (from 1.3 to 3.5 cubic feet is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.
- Ported Box: Rockford recommends a ported enclosure with an internal volume of 2.66 cubic feet using one 4" diameter x 10" long port; this yields a tuning frequency of 32 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 32 Hz).
Specifications:
- Size: 15 -inch
- Impedance (Ohms): 2, 8
- Cone Material: Kevlar reinforced paper
- Surround Material: Santoprene
- Port diameter (inches): 4
- Port length (inches): 10
- Free-Air: No
- Dual Voice Coil: Yes
- Sensitivity: 86 dB at 1 watt
- Frequency Response: 21 - 250 Hz
- Max RMS Power Handling: 400
- Peak Power Handling (Watts): 800
- Top Mount Depth (inches): 7 7/16
- Bottom Mount Depth (inches): N/A
- Cutout Diameter or Length (inches): 13 11/16
- Vas (liters): 219.6
- Fs (Hz): 20.9
- Qts: 0.66
- Xmax (millimeters): 9
- Parts Warranty: 1 Year
- Labor Warranty: 1 Year
- Ideal Sealed Box Volume (cubic feet): 1.58
- Minimum Sealed Box Volume (cubic feet): 1.3
- Maximum Sealed Box Volume (cubic feet): 3.5
- Ideal Ported Box Volume (cubic feet): 2.66
- Minimum Ported Box Volume (cubic feet): N/A
- Maximum Ported Box Volume (cubic feet): N/A
- UPC: 780687332723
- Weight: 20.01
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
Do you own this product?
Write a review!
-
got this crazy deal, using my 500-watt amp to power it up. sounds freaking awesome, man. low bass hits hard, and it didn't cost me an arm and a leg. no grille included, but who needs that anyway? if you're after serious power, this baby's got your back. I reckon if you're into that thump, this one's gonna do it big time.
